Lieutenant Braden discovers that Sally, the woman he's been falling in love with, has actually been checking out his qualifications to be a U.S. Navy frogman. He must put his personal life behind him after being assigned to be smuggled into a Japanese-held island via submarine to photograph radio codes.
James Garner
as Lt. J. G. Kenneth M. Braden
Edmond O'Brien
as Commander Paul Stevenson
Andra Martin
as Sally Johnson
Alan Hale Jr.
as Lt. Pat Malone
Carleton Carpenter
as Lt. Phil Carney
Frank Gifford
as Ensign Cy Mount
William Leslie
as Lt. Doherty
Richard Bakalyan
as Seaman Peck
Edd Byrnes
as Pharmacist Mate Ash
Sean Garrison
as Seaman Floyd
Henry Kulky
as Chief Petty Officer York
Warren Oates
as Seaman Kovacs
